BMW Cooling System Parts & Accessories for BMW E39 M5 S62 5.0L

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Thermostat Replacement Kit - E39 M5
Thermostat Replacement Kit - E39 M5
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:554086
Part#: 11537835558KT7
Ships in 3 Business Days
$ 170.99

This product was last offered at the strikethrough price on
04-21-2026

$ 158.99 USD
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$ 158.99 USD
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When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

Kit includes:

  • Behr thermostat with gasket
  • Thermostat mounting hardware
  • 1 Gal Genuine BMW coolant

 

This thermostat fits the following BMWs: 
1998-2004 E39 BMW M5 

 

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Complete Cooling System Overhaul Package - 2000-2003 E39 M5
Complete Cooling System Overhaul Package - 2000-2003 E39 M5
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:338714
Part#: TMS14418
Ships in 3 Business Days
$ 1,201.99

This product was last offered at the strikethrough price on
06-05-2026

Starting at $ 1,132.44 USD
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Starting at $ 1,132.44 USD
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This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2003 E39 M5 with the S62 engine.

A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. Our bundled package includes the following:
  • OEM Behr radiator
  • OEM Laso or OE BMW water pump with gasket
  • OE BMW coolant temp sensor (located in the water pump housing)
  • OEM Behr thermostat with o-ring
  • OE BMW o-rings for the inner coolant tubes
  • OE BMW expansion tank cap
  • OE BMW upper and lower radiator hoses with OE-style clamps
  • OE BMW expansion tank hose with OE-style clamps
    Optional items (which can be added below):
    - OE BMW antifreeze
    - Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
    - Add a new plastic expansion tank (if it's never been changed it's a risk of a crack or leak)
    - Add a new fan clutch

    Buy as a package and save $$$!

    This cooling system overhaul kit fits the following BMWs:
    1999-2003 E39 BMW M5
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    Cooling System Overhaul Kit - E39 M5
    Cooling System Overhaul Kit - E39 M5
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:554556
    Part#: 17111436062KT2
    Back Ordered
    $ 2,392.99

    This product was last offered at the strikethrough price on
    08-14-2026

    $ 2,317.99 USD
    Add to Wish List
    $ 2,317.99 USD
    Add to Wish List
    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2003 E39 M5 with the S62 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 
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    FAE Coolant Temperature Sensor - E46 E39 E82 E9X E60 E63 E38 E65 X3 X5 Z4
    FAE Coolant Temperature Sensor - E46 E39 E82 E9X E60 E63 E38 E65 X3 X...
    FAE - Corporate Logo
    T#:2472
    Part#: 13621433077
    In Stock
    $ 22.99 USD
    Free Shipping on orders $49 and up
    Add to Wish List
    $ 22.99 USD
    Free Shipping on orders $49 and up
    Add to Wish List
    This Cooling system temperature sensor mounts into the lower radiator hose.

    This item fits the following BMWs:
    2008+ E82 BMW 128i
    1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
    2006+ E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi
    2007+ E92 BMW 328i 328xi 328i xDrive
    2007+ E93 BMW 328i
    1999-2003 E39 BMW 525i 528i 530i 540i M5
    2004-2010 E60 BMW 525i 525xi 530i 530xi 545i 550i M5
    2004+ E63 BMW 645ci 650i M6
    1999-2001 E38 BMW 740i 740il 750il
    2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
    2004-2006 E83 BMW X3 2.5i X3 3.0i
    2000-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
    2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive48i X5M
    2007-2014 E71 BMW X6 xDrive50i X6M
    2003-2008 Z4 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
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    FAE Coolant Temperature Sensor - E31, E36, E38, E39, E52, E53, Z3
    FAE Coolant Temperature Sensor - E31, E36, E38, E39, E52, E53, Z3 ...
    Located on the water pump housing
    FAE - Corporate Logo
    T#:374002
    Part#: 13621703993
    In Stock
    $ 15.99 USD
    Free Shipping on orders $49 and up
    Add to Wish List
    $ 15.99 USD
    Free Shipping on orders $49 and up
    Add to Wish List
    Monitors coolant temperature

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